IIS7 deployment - duplicate 'system.web.extensions/scripting/scriptResourceHandler' section

asp.net deployment iis-7
user20358 picture user20358 · Aug 2, 2010 · Viewed 260.6k times · Source

On attempting to deploy a .net 3.5 website on the default app pool in IIS7 having the framework section set to 4.0, I get the following error.

There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined.

Commenting off the offending lines didn't help either. Any pointers on what I need to do or look at?

Answer

Carlos Aguilar Mares picture Carlos Aguilar Mares · Aug 4, 2010

If your plan is to deploy to an IIS that has an Application Pool running in .net 4.0 you will need to cleanup the web.config that includes all the section Definitions that point to .net 3.5. The reason this fails is because these section definitions are already included in the root web.config in .NET 4.0 (see %windir%\microsoft.net\framework\v4.0.30319\config\machine.config) that include all the system.web.extensions declared already.

Another quick fix is to have the application pool set to 2.0 just as your development machine appears to have,.

Related questions

ERROR Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies

I'm deploying my website on the server. My website is done using asp.net c# 4 and EF 4. I receive this error: Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. This assembly is built by a runtime …

Read More
How to fix ASP.NET error "The file 'nnn.aspx' has not been pre-compiled, and cannot be requested."?

I have a VS 2005 web site that I publish using "Publish Web Site", and I clear all the three checkboxes. I also have a deployment project that picks up the published files and creates an MSI. I then install the …

Read More
Could not load file or assembly 'System.Web.Razor' or one of its dependencies

I used Umbraco 4.11.6 in my website(web application).My website is worked in localhost(tested from Visual studio 2012 and IIS(v7)) but when I run it from internet space I got an error. The error was: Could not load file …

Read More